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In haemoglobin which amino acid acts as blood buferA. HistidineB. GlutamineC. Aspartic acidD. Lysine |
Answer» Correct Answer - A Protein buffers in blood include haemoglobin and plasma proteins. Buffering is done by the imidazole group of the histidine residues. Haemoglobin is quantitatively about 6 times more important than the plasma protein as it is present in about twice the concentration and contains about 3 times the number of histidine residues per molecule. |
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